Postmark
Email for web applications
Spam Mail Tester
Free report for improving deliverability of your email
FactScore™ 0Updated February 2026
| Postmark | Spam Mail Tester | |
|---|---|---|
| Rating | 5.0★ | N/A |
| Reviews | 17 | 0 |
| Pros | 9 | 0 |
| FactScore™ | 62.8 | 0 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Postmark — Pros
Reliable email delivery Fast performance Human support Transactional email Affordable pricing Email templates Excellent documentation Simple API Spam filterBoth tools — Pros
—Only in Spam Mail Tester — Pros
No unique pros listedOnly in Postmark — Cons
—Both tools — Cons
—Only in Spam Mail Tester — Cons
—Details
| Postmark | Spam Mail Tester | |
|---|---|---|
| Categories | Email clients, Email marketing | Email marketing, A/B testing tools |
| Platforms | Web · iOS | Web |
| Became Popular | July 23, 2014 | September 29, 2015 |
| Website | postmarkapp.com | www.mail-tester.com |
Who Should Pick Which?
Choose Postmark if...
- Reliable email delivery
- Fast performance
- Human support
Choose Spam Mail Tester if...
- No unique pros listed
With a FactScore™ of 62.8 vs 0, Postmark leads in community reception. Postmark uniquely offers Reliable email delivery and Fast performance, while Spam Mail Tester stands out for No unique pros listed.
What Users Say
Postmark
We use Postmark to send emails and manage newsletters directly from BlogBowl. Big thanks to Postmark for their reliable API and top-notch deliverability, which makes sure your newsletters actually ...
We use Postmark not only for our emails, but also to power Ply's built-in dynamic email capabilities. It's reliable, well documented and most of all - comes with awesome human support.
Once you get familiar with Postmark's layouts and templates, the service is great for quickly creating email templates and sending them out using their simple API. The UI is simple and intuitive.
Spam Mail Tester
No reviews yet
Related Comparisons
Frequently Asked Questions
Which is better, Postmark or Spam Mail Tester?
Based on FactScore™, Postmark leads with a score of 62.8 vs 0. Postmark has a higher rating of 5.0★ compared to N/A★.
What are the pros of Postmark compared to Spam Mail Tester?
Postmark uniquely offers: Reliable email delivery, Fast performance, Human support, Transactional email, Affordable pricing.
What are the pros of Spam Mail Tester compared to Postmark?
Spam Mail Tester uniquely offers: No unique pros listed.
Is Postmark better rated than Spam Mail Tester?
Postmark is rated 5.0★ from 17 reviews. Spam Mail Tester is rated N/A★ from 0 reviews.
What is the FactScore™ of Postmark and Spam Mail Tester?
FactScore™ weighs rating and review volume together. Postmark scores 62.8 and Spam Mail Tester scores 0.
Don't Get Fooled by Fake Social Media Videos
The world's first fact checker for social media. Paste any link and get an instant credibility score with sources.
Try FactCheckTool Free